sandbox_create
sandbox create
dev.spendctl/spendctl
Spend policy for AI agents that pay (x402, MPP). Login-free sandbox, real sidecar, no real funds.
transport:streamable-http
tools:8
Target client
run in your project directory
claude mcp add --transport http spendctl https://mcp.spendctl.dev/mcpsetup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain
Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs
sandbox_pay
sandbox pay
await_approval
await approval
withdraw_approval
withdraw approval
check_budget
Read-only
check budget
list_receipts
Read-only
list receipts
get_policy
Read-only
get policy
approve
approve
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.